biology

Hippocampus dahli

Hippocampus dahli is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Hippocampus dahli rather than just read about it. In short: Hippocampus dahli (lowcrown seahorse) is a fish species of the family Syngnathidae. It is endemic to the Australian northeastern coast, from Darwin to Brisbane, where it inhabits estuarine channels and rubble or soft substrates to depths of 21 metres (69 ft).

Key takeaways

Hippocampus dahli belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Hippocampus dahli to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Hippocampus dahli from memory before moving on to harder problems.

Reference excerpt

Hippocampus dahli (lowcrown seahorse) is a fish species of the family Syngnathidae. It is endemic to the Australian northeastern coast, from Darwin to Brisbane, where it inhabits estuarine channels and rubble or soft substrates to depths of 21 metres (69 ft). Little is known of its feeding habits, but it is likely to feed on small crustaceans such as copepods, amphipods, and gammarid, caprellid, and caridean shrimps, similar to other seahorses. This species is ovoviviparous, with males carrying eggs in a brood pouch before giving birth to live young. This species is not listed in FishBase and many authorities treat it as a synonym of Hippocampus trimaculatus.

Identifying features H. dahli can grow to lengths of about 12 centimetres (4.7 in). Individuals usually have relatively smooth bodies, with low, reduced spines and a low coronet. This species displays sexually dimorphic colour patterns. Females are mostly pale brown to black, often with black scribble marks forming lined, zebra-like patterns. Males are usually dark brown to black with black scribbles.

References

Further reading WoRMS Atlas of Living Australia iSeahorse IUCN Seahorse, Pipefish & Stickleback Specialist Group

Worked examples

Example 1 — a first encounter with Hippocampus dahli

Start with the simplest possible case. Write down what Hippocampus dahli claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Hippocampus dahli before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Hippocampus dahli ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Hippocampus dahli

In research: Hippocampus dahli appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Hippocampus dahli in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Hippocampus dahli is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fauna listed on CITES Appendix II, Fish described in 1908, IUCN Red List least concern species, so understanding it makes those chapters shorter.
In everyday life: Look for Hippocampus dahli outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Hippocampus dahli in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Hippocampus dahli means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Hippocampus dahli out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hippocampus dahli in simple terms?

Why does Hippocampus dahli matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Hippocampus dahli?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Hippocampus dahli.